EP3554726B1 - Abzug mit verbesserter zugänglichkeit zum frontschieberübertragungssystem - Google Patents

Abzug mit verbesserter zugänglichkeit zum frontschieberübertragungssystem Download PDF

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Publication number
EP3554726B1
EP3554726B1 EP18749156.8A EP18749156A EP3554726B1 EP 3554726 B1 EP3554726 B1 EP 3554726B1 EP 18749156 A EP18749156 A EP 18749156A EP 3554726 B1 EP3554726 B1 EP 3554726B1
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EP
European Patent Office
Prior art keywords
fume cupboard
uprights
sash
door
mentioned
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18749156.8A
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English (en)
French (fr)
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EP3554726A1 (de
Inventor
Fabio BIFFI
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bicasa Srl
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Bicasa Srl
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Filing date
Publication date
Application filed by Bicasa Srl filed Critical Bicasa Srl
Publication of EP3554726A1 publication Critical patent/EP3554726A1/de
Application granted granted Critical
Publication of EP3554726B1 publication Critical patent/EP3554726B1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B15/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B15/02—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area using chambers or hoods covering the area
    • B08B15/023—Fume cabinets or cupboards, e.g. for laboratories
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
    • B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
    • B25H1/20—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby with provision for shielding the work area
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/32—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing
    • E06B3/34—Arrangements of wings characterised by the manner of movement; Arrangements of movable wings in openings; Features of wings or frames relating solely to the manner of movement of the wing with only one kind of movement
    • E06B3/42—Sliding wings; Details of frames with respect to guiding
    • E06B3/44—Vertically-sliding wings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2215/00—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area
    • B08B2215/003—Preventing escape of dirt or fumes from the area where they are produced; Collecting or removing dirt or fumes from that area with the assistance of blowing nozzles
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES E05D AND E05F, RELATING TO CONSTRUCTION ELEMENTS, ELECTRIC CONTROL, POWER SUPPLY, POWER SIGNAL OR TRANSMISSION, USER INTERFACES, MOUNTING OR COUPLING, DETAILS, ACCESSORIES, AUXILIARY OPERATIONS NOT OTHERWISE PROVIDED FOR, APPLICATION THEREOF
    • E05Y2900/00—Application of doors, windows, wings or fittings thereof
    • E05Y2900/10—Application of doors, windows, wings or fittings thereof for buildings or parts thereof
    • E05Y2900/13—Type of wing
    • E05Y2900/132—Doors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
    • F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
    • F25D23/00—General constructional features
    • F25D23/02—Doors; Covers
    • F25D23/021—Sliding doors

Definitions

  • the present invention concerns a fume cupboard provided with improved sash.
  • Fume cupboards are protection devices provided with a forced suction work chamber, inside which tests can be carried out with chemical substances that create toxic fumes or in any case dangerous substances for the operator. Access to this inner chamber is by means of a door with a vertically sliding frame, named sash, in which a sheet of transparent material, preferably glass, is supported by said frame and has the function of providing front closure of the fume cupboard.
  • one or more counterweights are commonly used, connected to the sash frame by means of pulleys, bearings, wires or belts, where the counterweights are located behind and on the outside of the rear wall of the fume cupboard, in the limited space which usually separates this rear wall from the wall against which the fume cupboard is positioned when installed.
  • the described arrangement of the counterweight mechanism for control of the sash movements obstructs cleaning and maintenance operations thereon, considering the weight, volume and connection of the fume cupboard to the fume extraction system.
  • All the components of the described sash handling mechanism (pulleys, bearings, wires or belts) are furthermore positioned outside, therefore in an environment not protected against the aggressive action of the fumes extracted from the work chamber of the fume cupboard, thus being subject to dirt and consequent damages to the mechanical parts of the system.
  • CN 103 726 751 A discloses a combined chute for a lifting glass window of a laboratory hood. This document shows the features of a fume cabinet as described in the preamble of the appended independent claim.
  • US 2 819 666 A relates to a laboratory fume hood for removing fumes, regardless of whether the access opening is fully open or closed.
  • US 2 701 896 A concerns a vertical sliding access door for the passage of articles and persons into and from compartments.
  • US 2 199 182 A describes a sealing mechanism for slidable doors.
  • the main object of the present invention is to produce a fume cupboard provided with an improved sash on which, unlike the similar equipment of the known art, maintenance work can be performed rapidly and simply, without the traditional need to move the fume cupboard from the wall against which it is positioned, in order to create the space necessary to access the counterweight mechanism.
  • a further object of the invention is to produce a fume cupboard provided with a sash which is simpler and less expensive than those known, traditionally positioned on the outside and behind the rear wall of the fume cupboard.
  • a further object of the invention is to produce a fume cupboard in which all the components of the sash handling mechanism are at least partly arranged in a closed environment protected from the aggression of the chemical agents present inside the fume cupboard.
  • a further object of the invention is to produce a fume cupboard which, unlike the similar equipment of the known art, allows the sash to be changed rapidly and simply, without having to disassemble the operating counterweight mechanism from the body of the fume cupboard.
  • the one of the invention offers the advantage that, due to the positioning of the counterweight mechanism, pulleys, bearings, cables and belts on the sides of the body of the fume cupboard, access to said mechanism no longer requires having to work in the limited space between the rear wall of the fume cupboard and the wall against which the latter is positioned.
  • the openable door on the uprights of the fume cupboard of the invention allows access to the mechanism that transmits the movements to the sash, without having to disassemble the framework of the fume cupboard and without having to disconnect the fume extraction hose from the body of the fume cupboard.
  • the fume cupboard of the invention furthermore has the advantage of presenting a simpler and less expensive sash than the sashes of the known fume cupboards, due to the use of fewer components, moreover positioned in an environment protected from the attack of chemical agents present inside the fume cupboard.
  • the fume cupboard of the invention also has the advantage of allowing replacement of the sash, leaving on the latter the relative operating mechanism, which makes the replacement operation simpler, more practical and more rapid compared to the operation required on the traditional fume cupboards.
  • the fume cupboard of the invention is indicated overall by 1 in figure 1 . It has a substantially parallelepiped-shaped framework, in which two front uprights 2a,2b and two rear uprights 3a,3b can be distinguished. A sash 4 is in turn provided, sliding vertically between the above-mentioned front uprights 2a,2b and in front of a chamber 10 inside the fume cupboard 1, having a work surface 5 on which the containers of the chemical substances are rested, the fumes of which are extracted by the fume cupboard.
  • the fume cupboard 1 is completed by two lateral panels 6 and 7 arranged between the relative front and rear uprights, an upper panel 8 which can be provided with a suction hole 9 for the extraction of the fumes from the chamber 10 of the fume cupboard 1 and a rear closing panel 11.
  • the sash 4 is composed of a frame 12 inside which a panel 13 of transparent material is supported, for example glass, acting as a closing door of the inner chamber 10 of the fume cupboard.
  • the vertical movements of the sash 4 are achieved by means of the transmission system 14 of figures 2 to 5 and 10 .
  • Said system comprises a plate 15 fixed to the frame 12 by means of a block element 16, while the screws 17 fix the block element 16 to the plate 15 and similar screws 18 serve to fix the frame 12 to the block element 16.
  • the end 19 of a cogged transmission belt 20 is furthermore fixed to the plate 15, at a bracket 21 mounted in a sliding manner on said plate 15.
  • the belt 20 is then wound on a return pulley 22 pivoted at the upper end of the above-mentioned front upright 2b and is fixed, at its opposite end 23, to a counterweight 24.
  • the described transmission system for transmitting the movements to the sash 4 is housed in an internal space 25, formed inside the front upright 2b and closed by means of a door 26 forming part of said upright.
  • a similar transmission system is also provided inside the internal space 25 of the other front upright 2a of the fume cupboard of the invention.
  • the internal space 25 of the uprights 2a,2b of the fume cupboard 1 is closed by a side door 26, with shape corresponding to that of the upright on which it closes, completing the structure thereof.
  • said door 26 has a first longitudinal edge provided with a hinge coupling with the corresponding longitudinal first edge of the upright 2b and a second longitudinal edge provided with a snap coupling with the corresponding longitudinal second edge of the same upright.
  • the door 26 has a first longitudinal edge 50 which, in cross section, has an arc-shape 55, adapted to house, inside, a seat 56 having corresponding shape, formed on the respective edge 51 of the upright 2b.
  • a hinge coupling is substantially achieved, which allows the door 26 to rotate with respect to the upright 2b in the direction of the arrows F1 of figure 3a .
  • the second longitudinal edge 52 of the door 26, opposite the edge 50, has a tooth 53 which snap-couples with a corresponding counter element 54 provided on the relative inner part of the internal space 25 of the upright 2b.
  • the upright 2b is closed by a front door 26a, bearing on the longitudinal edges of tongues 57,58 adapted to snap-couple with the strikers 59,60 provided on the corresponding edges of said upright 2b.
  • a synchronization shaft 27 better illustrated in figures 6 to 9 .
  • the above-mentioned shaft 27 has opposite ends 28 and 29 which are fixed to the respective return pulleys 22a and 22b of the cogged belt 20 in the corresponding front uprights 2a and 2b.
  • the transmission system 14 to the frame 12 of the sash 4 functions between the state of operation illustrated in figure 5 and blocking in conditions of safety illustrated in figures 13a, 13b .
  • the above-mentioned transmission system 14 comprises a safety device for blocking the movement of the sash 4, in which the sliding connection of the described bracket 21 on the plate 15 is achieved by means of screws 30 and 31. These are in turn fixed to the same plate 15 and are positioned sliding inside respective slots 32,33 provided on the above-mentioned bracket 21.
  • One end of a spring 34 is furthermore fixed to a pin 35 of the plate 21, while the other end is fixed to a pin 36 integral with the plate 15.
  • This safety system is completed by two tongues 37,38 pivoting on a pin 40 fixed to the sliding bracket 21.
  • the above-mentioned tongues 37,38 have a serrated edge 39, adapted to interfere against the corresponding inner surface 41 of the internal space 25 of the uprights 2a and 2b, thus stopping the movement of the plate 15 and therefore also of the sash 4.
  • the transmission system for transmitting the movement to the sash 4 is housed in the front part of the front uprights 2a,2b of the fume cupboard 1, with the same procedure as described for the preceding figures.
  • the connection of the plate 15 to the frame 12 of the sash 4 includes a friction stop mechanism to stop the movements of the sash, as illustrated in figures 14 to 16 .
  • This mechanism comprises a block element 43, made of plastic material or other, fixed projecting onto the surface of the plate 15 facing the front of the upright in which the transmission system 14 is housed.
  • the block element 43 is arranged sliding inside a slot 44 obtained on the above-mentioned plate 15, counter to a friction piston 45 connected to the above-mentioned block element 43.
  • a lever 46 is also fixed, oscillating on a plane perpendicular to that of the plate 15 and rotating around a pin 47 fixed to the plate 15 (arrow F2 of figure 14 ).
  • the upper end of the lever 46 has a pin 48, projecting towards the plate 15 and arranged in a position of interference with the block element 43 in the upward stroke of the plate 15 (arrow F1 of figure 14 ).
  • a button 49 for releasing the above-mentioned upward stroke of the sash 4 is also provided.
  • the counterweight 24 could be replaced by a linear lead screw with an electric or manual control.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Wing Frames And Configurations (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Prevention Of Fouling (AREA)

Claims (10)

  1. Abzug von der Art, die einen Rahmen mit zwei vorderen Stehern (2a, 2b), zwei hinteren Stehern (3a, 3b), einer hinteren Platte (11), zwei Seitenplatten (6, 7), einer oberen Platte (8) und einem Frontschieber (4), der aus einem Rahmen (12) und wenigstens einer Platte (13) zum Verschließen einer Innenkammer (10) des Abzugs (1) besteht, aufweist und mit einem Übertragungssystem (14) zur Übertragung der senkrechten Bewegungen des Frontschiebers (4) versehen ist, das sich im Inneren der oben genannten vorderen Steher (2a, 2b) oder im Inneren der vorderen Steher (2a, 2b) und der hinteren Steher (3a, 3b) befindet, dadurch gekennzeichnet:
    dass die oben genannten Steher (2a, 2b; 3a, 3b) einen Innenraum (25) zur Aufnahme des Übertragungssystems (14) aufweisen, der durch eine Tür (26, 26a) verschlossen ist.
  2. Abzug nach Anspruch 1, dadurch gekennzeichnet, dass sich das oben genannte Übertragungssystem (14) in der Seite der oben genannten Steher des Abzugs (1) befindet.
  3. Abzug nach Anspruch 1, dadurch gekennzeichnet, dass sich das Übertragungssystem (14) in dem vorderen Teil der oben genannten vorderen Steher (2a, 2b) befindet.
  4. Abzug nach Anspruch 1, dadurch gekennzeichnet, dass die Tür eine Seitentür (26) ist, die eine erste Längskante, welche mit einer Scharnierverbindung mit der entsprechenden ersten Längskante des Stehers (2b) versehen ist, und eine zweite Längskante, welche mit einer Schnappverbindung mit der entsprechenden zweiten Längskante des gleichen Stehers (2b) versehen ist, aufweist.
  5. Abzug nach Anspruch 4, dadurch gekennzeichnet, dass die Tür (26) eine erste Längskante (50) mit einer Bogenform (55) aufweist, die im Inneren eines Sitzes (56) mit einer entsprechenden Form, der an der zugehörigen Kante (51) des Stehers (2b) gebildet ist, untergebracht ist.
  6. Abzug nach Anspruch 5, dadurch gekennzeichnet, dass die Seitentür (26) eine zu der Kante (50) entgegengesetzte zweite Längskante (52) aufweist, die mit einem Zahn (53) versehen ist, der mit einem entsprechenden Gegenelement (54), das an dem relativen Innenteil des Innenraums (25) des Stehers (2b) bereitgestellt ist, in eine Schnappverbindung tritt.
  7. Abzug nach Anspruch 1, dadurch gekennzeichnet, dass die Tür eine Vordertür (26a) ist, die an ihren Längskanten Zungen (57, 58) trägt, welche dazu ausgelegt sind, mit Rasten (59, 60), die an den entsprechenden Kanten des Stehers (2b) bereitgestellt sind, in eine Schnappverbindung zu treten.
  8. Abzug nach einem oder mehreren der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das Übertragungssystem (14) einen Übertragungsriemen (20) aufweist, dessen Ende (19) an dem Rahmen (12) des Frontschiebers (4) angebracht ist, während das andere Ende (23) an einem Gegengewicht (24) oder an einer elektrisch oder manuell gesteuerten linearen Gewindespindel fixiert ist, wobei ferner wenigstens eine Umlenkscheibe (22, 42) für den Riemen (20) bereitgestellt ist, die drehbar an den oben genannten Stehern des Abzugs (1) angebracht ist.
  9. Abzug nach Anspruch 8, dadurch gekennzeichnet, dass der Übertragungsmechanismus (14) eine Scheibe (22) zum Zurückführen des Riemens (20) im Inneren der oben genannten vorderen Steher (2a, 2b) und eine Scheibe (42) zum Zurückführen des Riemens (20) im Inneren der oben genannten hinteren Steher (3a, 3b) aufweist.
  10. Abzug nach Anspruch 1, dadurch gekennzeichnet, dass er darüber hinaus eine Synchronisationswelle (27) zum Synchronisieren der Bewegungen der Übertragungssysteme (14), die in den Stehern des Abzugs (1) untergebracht sind, aufweist, wobei die entgegengesetzten Enden (28, 29) der Welle (27) an den jeweiligen Umlenkscheiben (22a, 22b) zum Zurückführen des Riemens (20) in den entsprechenden vorderen Stehern (2a, 2b) fixiert sind.
EP18749156.8A 2017-07-26 2018-07-13 Abzug mit verbesserter zugänglichkeit zum frontschieberübertragungssystem Active EP3554726B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102017000085216A IT201700085216A1 (it) 2017-07-26 2017-07-26 Cappa chimica provvista di saliscendi di tipo migliorato
PCT/IB2018/055190 WO2019021101A1 (en) 2017-07-26 2018-07-13 LABORATORY HOOD HAVING IMPROVED ACCESSIBILITY TO THE MOBILE CHASSIS TRANSMISSION SYSTEM

Publications (2)

Publication Number Publication Date
EP3554726A1 EP3554726A1 (de) 2019-10-23
EP3554726B1 true EP3554726B1 (de) 2022-05-25

Family

ID=60451073

Family Applications (1)

Application Number Title Priority Date Filing Date
EP18749156.8A Active EP3554726B1 (de) 2017-07-26 2018-07-13 Abzug mit verbesserter zugänglichkeit zum frontschieberübertragungssystem

Country Status (8)

Country Link
US (1) US11691190B2 (de)
EP (1) EP3554726B1 (de)
AU (1) AU2018307699B2 (de)
ES (1) ES2924687T3 (de)
IT (1) IT201700085216A1 (de)
PT (1) PT3554726T (de)
RU (1) RU2730308C1 (de)
WO (1) WO2019021101A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3865224B1 (de) * 2020-02-13 2023-11-08 Visu Kaluste Oy Aufhängungssystem für den frontschieber eines laborabzuges und verfahren für einen frontschieber eines laborabzuges
CN112123298A (zh) * 2020-08-07 2020-12-25 浙江海轩科技有限公司 一种包装膜生产中的安全防护装置

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2199182A (en) * 1938-09-14 1940-04-30 Jamison Cold Storage Door Comp Sealing mechanism for slidable doors
US2701896A (en) * 1951-04-24 1955-02-15 Chase Blum Vertical sliding access door
US2819666A (en) * 1955-12-14 1958-01-14 Kirk & Blum Mfg Company Laboratory fume hood
US4377969A (en) * 1980-12-08 1983-03-29 Kewaunee Scientific Equipment Corp. Automatic fume hood airflow control
US5216782A (en) * 1991-03-08 1993-06-08 Classic Modular Systems, Inc. Sash counterbalance leveling device
KR100452354B1 (ko) * 2002-01-09 2004-10-12 엘지전자 주식회사 드럼세탁기의 도어 후크 어셈블리
CN101481982A (zh) * 2008-01-09 2009-07-15 詹姆斯顿金属制品公司 用于防止窗扇翘起的通风橱驱动系统
RU2393032C1 (ru) * 2009-03-02 2010-06-27 Закрытое акционерное общество "Асептические Медицинские Системы" Шкаф вытяжной
ITMO20120139A1 (it) * 2012-05-28 2013-11-29 Arredi Tecnici Casarin S R L Cappa di aspirazione
CN103726751B (zh) * 2014-01-27 2016-06-08 北京成威博瑞实验室设备有限公司 实验室通风柜升降玻璃视窗用组合滑道
US10096985B2 (en) * 2014-10-31 2018-10-09 Hewlett Packard Enterprise Development Lp Cable storage module
US9867310B2 (en) * 2015-12-03 2018-01-09 International Business Machines Corporation Rack sidecar for additional IT equipment and cable management

Also Published As

Publication number Publication date
US20200215591A1 (en) 2020-07-09
RU2730308C1 (ru) 2020-08-21
ES2924687T3 (es) 2022-10-10
AU2018307699A1 (en) 2019-08-01
PT3554726T (pt) 2022-08-12
US11691190B2 (en) 2023-07-04
IT201700085216A1 (it) 2019-01-26
EP3554726A1 (de) 2019-10-23
AU2018307699B2 (en) 2023-05-25
WO2019021101A1 (en) 2019-01-31

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